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Il trading viene condotto tramite la piattaforma Hype della banca, con la banca che funge da intermediario per mitigare i potenziali rischi per la sicurezza con gli scambi di criptovaluta. Con il paese in blocco e tutti bloccati a casa, la banca sta capitalizzando un crescente interesse per Bitcoin come modo sicuro per trasferire denaro a livello internazionale nel mezzo della crisi.
Rreth 1. Abbiamo sorpassato 1 milione di utenti in 18 giorni! Ma la primavera non sapeva nulla. Jump to. Sections of this page. Accessibility help. Email or phone Password Forgotten account? Log In. Janice Fitzgerald announced 85 new cases of the disease in a late afternoon briefing, 32 of them presumptive positive tests that have yet to be confirmed through the provincial microbiology laboratory in St.
The case counts, rising from 11 to 36 to 85 in three days, so far suggest untethered spread, but Fitzgerald has said contact tracing and testing is more rigorous and efficient than it was when the pandemic first hit in There are no hospitalizations. Mount Pearl Senior High School has been the focal point of the cases.
The school has been closed all week, and Fitzgerald had a message for all students and teachers who are now being tested for the coronavirus. Fitzgerald was blunt in her assessment of how so many cases have occurred in such a short time. Imagine how these people must feel.
All sports, recreational and other activities that involve close contact are suspended across Newfoundland and Labrador. The status will be re-evaluated in two weeks. For the St. Johns region, she recommended all schools and post-secondary institutions close. Most have already done so. Formal gatherings such as weddings are now limited to 10 people, while wakes and visitations are prohibited. Informal gatherings are prohibited, other than members of the household bubble plus one other person who is not connected to any other bubble.
Private health-care clinics can remain open, as can child-care services. Services such as spas, hair salons, tattoo parlours and tanning places must close. Animal daycares and grooming outlets can stay open, as long as they can offer contactless dropoff and pickup.
Restaurants must close to in-person dining, but drive-thru delivery and takeout are allowed. As of Tuesday, bars, lounges, gyms, bingo halls and cinemas were already ordered to shut down. Fitzgerald also strongly recommended against travel outside the St. Health Minister Dr. John Haggie said Wednesday his department is ready to help Eastern Health in any way it can as the authority deals with the crisis.
Haggie pleaded for anyone with symptoms or anyone who falls into a category identified in Public Health alerts to get tested. The world No. NSW minister Matt Kean's call for national environment watchdog at odds with federal CoalitionState says new body should be independent of politics and Morrison government should ensure strong Australian environmental standards NSW environment minister Matt Kean says he has written to the federal government saying it should adopt strong new standards that are independently enforced.
When both the exhaling and inhaling heads were double-masked, more than 95 percent of the particles were blocked. Top dunks from Chicago Bulls vs. Sofia Kenin's first Grand Slam title defence came to an end , defeat to Kaia Kanepi in the second round. Canada markets closed. DOW 31, CMC Crypto FTSE 6, Read full article. Samuel Shen and Alun John January 22, , p. Latest Stories. The Quint. Local Journalism Initiative.
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Possibility of modifying the transaction ID of a transaction without affecting his validity. This attack has a chance to work even if the merchant waits for some confirmations, but requires extremely high relative hashrate. Cryptocurrency alternative to Bitcoin. IT : Moneta nata da un fork del software di bitcoin che vive su una diversa blockchain.
Anonymity is used to describe situations where the acting person's name is unknown. For example, a chip designed to run in a digital voice recorder or a high-efficiency Bitcoin miner is an ASIC. Application-specific standard products ASSPs are intermediate between ASICs and industry standard integrated circuits like the or the series. IT : Circuiti integrati progettati per una specifica applicazione. In computing, bandwidth is the bit-rate of available or consumed information capacity expressed typically in metric multiples of bits per second.
Variously, bandwidth may be characterized as network bandwidth, data bandwidth, or digital bandwidth. This definition of bandwidth is in contrast to the field of signal processing, wireless communications, modem data transmission, digital communications, and electronics, in which bandwidth is used to refer to analog signal bandwidth measured in hertz, meaning the frequency range between lowest and highest attainable frequency while meeting a well-defined impairment level in signal power.
However, the actual bit rate that can be achieved depends not only on the signal bandwidth, but also on the noise on the channel. IT : Volume di banda di dati. Bitcoin Improvement Proposal. This is the standard way of communicating ideas since Bitcoin has no formal structure. IT : Nome delle proposte formali di miglioramento del Bitcoin.
Il numero fa riferimento alla proposta specifica. Bitcoin is a digital currency invented by Satoshi Nakamoto. Nakamoto introduced the idea on 31 October to a cryptography mailing list, and released it as open-source software in The system is peer-to-peer and transactions take place between users directly, without an intermediary.
These transactions are verified by network nodes and recorded in a public distributed ledger called the blockchain, which uses bitcoin as its unit of account. IT : Simbolo e abbreviazione del Bitcoin. A Bitcoin address, or simply address, is an identifier of alphanumeric characters, beginning with the number 1 or 3, that represents a possible destination for a bitcoin payment. Addresses can be generated at no cost by any user of Bitcoin.
For example, using Bitcoin Core, one can click "New Address" and be assigned an address. It is also possible to get a Bitcoin address using an account at an exchange or online wallet service. IT : Codice alfanumerico che viene utilizzato per indirizzare i pagamenti in bitcoin. Bitcoin Core is the open source client of the Bitcoin Cryptocurrency. The software validates the whole Blockchain including all transactions ever done. Moreover a wallet, which can be used to transfer funds, is included by default.
IT : Client di riferimento del mondo Bitcoin. Permette tutte le operazioni normali del mondo bitcoin eseguite in forma "canonica". IT : Somma-prodotto dell'ammontare dei bitcoin spesi per il numero di giorni in cui questi sono rimasti fermi prima della transazione. A wallet which stores the information necessary to transact bitcoins. While wallets are often described as a place to holdor store bitcoins,due to the nature of the system, bitcoins are inseparable from the blockchain transaction ledger.
A better way to describe a wallet is something that "stores the digital credentials for your bitcoin holdings" and allows you to access and spend them. Bitcoin uses public-key cryptography, in which two cryptographic keys, one public and one private, are generated.
At its most basic, a wallet is a collection of these keys. IT : Client per effettuare spese in bitcoin, custodire gli stessi e riceverli. A block is a permanent record of data stored in the blockchain, acting like a page or ledger. Each block contains and confirms pending transactions. Roughly every 10 minutes, on average, a new block along with the transactions it contains is added to the blockchain through mining.
IT : Struttura di dati composta da un gruppo di transazioni bitcoin e da un'intestazione con informazioni essenziali per garantire la correttezza dei dati e la posizione cronologica rispetto agli altri. The number of blocks preceding a particular block on a block chain. For example, the genesis block has a height of zero because zero block preceded it. IT : numero cronologico che posiziona il blocco all'interno della blockchain.
Miners can mine blocks up to the 1MB fixed limit, but any block larger than 1MB is invalid. IT : Dimensione del blocco in Kb o Mb. Blocks are limited to 1MB in size. This limit cannot be modified without a hard fork. IT : Limite nella dimensione del blocco. The reward given to a miner which has successfully hashed a transaction block.
Block rewards can be a mixture of coins and transaction fees, depending on the policy used by the cryptocurrency in question, and whether all of the coins have already been successfully mined. Bitcoin Core checks each block of transactions it receives to ensure that everything in that block is fully valid—allowing it to trust the block without trusting the miner who created it. This prevents miners from tricking Bitcoin Core users into accepting blocks that violate the 21 million bitcoin limit or which break other important rules.
IT : Validazione contabile, formale e crittografica della composizione del blocco secondo le regole che costituiscono il consensus tra i computers della rete. A public ledger of all confirmed transactions in a form of a tree of all valid blocks including orphans. Most of the time, "blockchain" means the main chain, a single most difficult chain of blocks. Blockchain is updated by mining blocks with new transactions.
Unconfirmed transactions are not part of the blockchain. If some clients disagree on which chain is main or which blocks are valid, a fork happens. IT : Catena costituita dalla sequenza dei blocchi in cui ciascuno di essi si riferisce in modo univoco e crittografico a quello precedente. It is exactly like downloading the block chain again from peers, except the blocks already on disk are used.
IT : Reindicizzazione del database delle transazioni che costituiscono la blockchain. EN : Byzantine Generals' Problem. In fault-tolerant computer systems, and in particular distributed computing systems, Byzantine fault tolerance is the characteristic of a system that tolerates the class of failures known as the Byzantine Generals' Problem.
As reliable computer systems must handle malfunctioningcomponents that give conflicting information to different parts of the system. This situation can be expressed abstractly in terms of a group of generals of the Byzantine army camped with their troops around an enemy city. Communicatingonly by messenger, the generals must agree upon a common battle plan. However, one or more of them may be traitors who will try to confuse the others.
The problem is to find an algorithm to ensure that the loyal generals will reach agreement. It is shown that, using only oral messages, this problem is solvable if and only if more than two-thirds of the generals are loyal; so a single traitor can confound two loyal generals.
With unforgeable written messages, the problem is solvable for any number of generals and possible traitors. IT : Problema noto delle reti distribuite che devono coordinarsi in assenza di una struttura gerarchica reti peer to peer. The essential nature of the P2P network in Bitcoin was done explicitly to allow censorship resistance, such that even governmental agencies would be unable to stop the network and stop its payments.
IT : Resistente ai tentativi di censura nei confronti degli operatori della rete. This is usually considered in relation with mining centralization. It is considered the most dangerous form of centralization. It is probably the best known as well, although I would argue not always the most understood.
IT : Centralizzazione. IT : Operatore dello script di validazione del protocollo che permette di definire un momento storico in tempo o in altezza di blocchi prima del quale i bitcoin racchiusi in una transazione non spesa non possono essere spesi. A opcode that allows an output to conditionally specify how long it must be part of the blockchain before an input spending it may be added to the blockchain.
ZH : CSV. IT : Operatore dello script di validazione del protocollo che permette di definire un lasso di tempo o un numero di conferme prima delle quali i bitcoin racchiusi in una transazione non spesa non possono essere spesi.
Every once in a while, an old block hash is hardcoded into Bitcoin software. Different implementations choose different checkpoint locations. Checkpoints prevent various DOS attacks from nodes flooding unusable chains and attacks involving isolating nodes and giving them fake chains. IT : Punto di controllo o di verifica posto in un punto storico della blockchain da alcuni clients bitcoin. Questi clients considerano le transazioni fino al checkpoint come valide e irreversibili e non permettono forks che cerchino di partire dal blocco precedente al checkpoint.
These are, in order of stack depth, the public key and the signature of the script. IT : Operatore di verifica della firma digitale nella transazione. It is is a proposed method of 'unsticking' transactions with small fees that have difficulty getting included into a block. The coinbase is the content of the 'input' of a generation transaction. While regular transactions use the 'inputs' section to refer to their parent transaction outputs, a generation transaction has no parent, and creates new coins from nothing.
IT : Transazione speciale di creazione di bitcoin. After a transaction is broadcast to the Bitcoin network, it may be included in a block that is published to the network. When that happens it is said that the transaction has been mined at a depth of 1 block. With each subsequent block that is found, the number of blocks deep is increased by one. IT : Momento in cui il blocco e tutte le transazioni incluse in esso sono accettate dalla rete come valide ed entrano a far parte della blockchain.
Il blocco in formazione deve da questo momento avere il numero successivo a quello confermato. The consensus rules are the specific set of rules that all Bitcoin full nodes will unfailingly enforce when considering the validity of a block and its transactions.
For example, the Bitcoin consensus rules require that blocks only create a certain number of bitcoins. IT : Quando svariati nodi hanno tutti gli stessi blocchi nella loro blockchain validata localmente. Developers regularly create intentional consensus forks by modifying Bitcoin client software. These changes upgrade or constrain the way that Bitcoin works — temporarily or permanently. IT : Biforcazione della rete dovuto a un problema nel consensus.
IT : Criptovaluta digitale. It is a finite directed graph with no directed cycles. That is, it consists of finitely many vertices and edges, with each edge directed from one vertex to another, such that there is no way to start at any vertex v and follow a consistently-directed sequence of edges that eventually loops back to vagain. DDOS attack is a type of DOS attack that occurs when multiple systems flood the bandwidth or resources of a targeted system, usually one or more web servers.
A botnet is a network of zombie computers programmed to receive commands without the owners' knowledge. The major advantages to an attacker of using a distributed denial-of-service attack are that multiple machines can generate more attack traffic than one machine, multiple attack machines are harder to turn off than one attack machine, and that the behavior of each attack machine can be stealthier, making it harder to track and shut down.
These attacker advantages cause challenges for defense mechanisms. For example, merely purchasing more incoming bandwidth than the current volume of the attack might not help, because the attacker might be able to simply add more attack machines. This after all will end up completely crashing a website for periods of time. IT : Funzionamento identico al DOS ma realizzato utilizzando numerose macchine attaccanti che insieme costituiscono una botnet. Without a central authority or controlling party.
Bitcoin is a decentralized network since no company, government, or individual is in control of it. Tutte le transazioni sono rese pubbliche, con la presenza di un unico registro storico ed informatico condiviso tra gli utenti. A distributed network is designed so that there is no central server or entity that others must connect to.
Instead, network participants connect directly to each other. Bitcoin is a distributed network. IT : Rete Distribuita. In computing, a denial-of-service DoS attack is an attempt to make a machine or network resource unavailable to its intended users, such as to temporarily or indefinitely interrupt or suspend services of a host connected to the Internet. Double-spending is a failure mode of digital cash schemes, when it is possible to spend a single digital token twice.
Since, unlike physical token money such as coins, electronic files can be duplicated, and hence the act of spending a digital coin does not remove its data from the ownership of the original holder, some other means are needed to prevent double-spending.
Il mining di Bitcoin ed il block chain esistono per creare un consenso sulla rete, per decidere quale delle due transazioni sia considerata valida. IT : BIP - Limite definito in modo dinamico normalmente riferito al limite della dimensione del blocco sulla base del volume di transazioni. With bitcoin, the data that is signed is the transaction that transfers ownership. IT : Algoritmo di firma digitale basato sulla curva ellittica. Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference.
The Finney attack is a fraudulent double-spend that requires the participation of a miner once a block has been mined. The risk of a Finney attack cannot be eliminated regardless of the precautions taken by the merchant, but the participation of a miner is required and a specific sequence of events must occur. Quando il merchant eroga il bene o il servizio il miner trasmette il proprio blocco con la transazione fraudolenta.
A flood attack is the process of sending thousands of transactions to "flood" the mempool, filling new blocks to the maximum size of 1MB, and subsequently delaying other transactions. It is easy to send transactions to yourself repeatedly, but it is made expensive with transaction fees. IT : Attacco basato sulla produzione di transazioni con un altissimo numero di outputs di importo irrilevante verso un destinatario unico.
Segwit rende questo attacco quasi ineffettivo. Any computer that connects to the Bitcoin network is called a node. Nodes that fully enforce all of the rules of Bitcoin are called full nodes. Most nodes on the network are lightweight nodes instead of full nodes, but full nodes form the backbone of the network.
IT : Biforkazione generalmente riferito alla blockchain oppure allo sfruttamento e modifica di codice open source esistente che genera un altro software. Mantiene una copia della blockchain. Fungibility refers to the concept that every unit or subunit remains equivalent and identical to any other unit or subunit. It is the property of a good or commodity whose individual units are capable ofmutual substitution.
The unit symbol for the gigabyte is GB. Corrisponde a un miliardo di bytes. The Great Firewall of China, commonly known as "wall" is used by international, including Chinese, media to refer to legislation and projects initiated by the Chinese government which is controlled by the Communist Party of China, CPC that attempt to regulate the Internet in Mainland China.
Any alteration to bitcoin which changes the block structure including block hash , difficulty rules, or increases the set of valid transactions is a hardfork. IT : Biforkazione nella blockchain provocata da un allargamento delle regole del consenso. A hash algorithm turns an arbitrarily-large amount of data into a fixed-length hash. The same hash will always result from the same data, but modifying the data by even one bit will completely change the hash.
Like all computer data, hashes are large numbers, and are usually written as hexadecimal. BitCoin uses the SHA hash algorithm to generate verifiably "random" numbers in a way that requires a predictable amount of CPU effort. Generating a SHA hash with a value less than the current target solves a block and wins you some coins. Una funzione di hash ha due caratteristiche importanti. A cryptographic hash function is a mathematical algorithm that maps data of arbitrary size to a bit string of a fixed size a hash function which is designed to also be one-way function, that is, a function which is infeasible to invert.
The only way to recreate the input data from an ideal cryptographic hash function's output is to try a large number of possible inputs to see if they produce a match. Bruce Schneier has called one-way hash functions "the workhorses of modern cryptography". The input data is often called the message, and the output the hash value or hash is often called the message digest or simply the digest.
IT : Funzione Hash. Invertible Bloom Lookup Tables IBLTs are a new described in data structure that can be used to solve the set reconciliation problem. Then transmit that squashed data to a peer, who mostly knows what data you are sending them, but might be missing a few transactions or might be expecting that you put a few transaction in your block that you actually didn't. IT : Metodo per trovare le differenze tra due set di dati residenti su due hosts senza trasferire l'intero set di dati da un host all'altro.
The kilobyte is a multiple of the unit byte for digital information. The unit symbol for the kilobyte is kB. In this context, the symbols K and KB are often used when bytes are meant. Corrisponde a un migliaio di bytes. Lightning Network is a proposed implementation of Hash Time Locked Contracts HTLCs with bi-directional payment channels which allows payments to be securely routed across multiple peer-to-peer payment channels.
This allows the formation of a network where any peer on the network can pay any other peer even if they don't directly have a channel open between each other. Litecoin is a peer-to-peer Internet currency that enables instant, near-zero cost payments to anyone in the world. Litecoin is an open source, global payment network that is fully decentralized without any central authorities. Mathematics secures the network and empowers individuals to control their own finances. Litecoin features faster transaction confirmation times and improved storage efficiency than the leading math-based currency.
IT : Cryptovaluta alternativa. The locktime indicates the earliest time a transaction can be added to the block chain. Locktime allows signers to create time-locked transactions which will only become valid in the future, giving the signers a chance to change their minds.
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